Stereochemical study of a Lewis acid-promoted reaction of 2-silyloxypyrrole with aliphatic and aromatic aldehydes

被引:15
作者
Uno, H
Nishihara, Y
Mizobe, N
Ono, N
机构
[1] Ehime Univ, Adv Instrumentat Ctr Chem Anal, Matsuyama, Ehime 7908577, Japan
[2] Ehime Univ, Fac Sci, Dept Chem, Matsuyama, Ehime 7908577, Japan
关键词
D O I
10.1246/bcsj.72.1533
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In the presence of BF3 OEt2, the reaction of 1-t-butoxycarbonyl-2-t-butyldimethylsiloxypyrrole with aliphatic and aromatic aldehydes in ether occurred stereoselectively to give the corresponding erythro and threo isomers, respectively, while a similar reaction in the presence of SnCl4 showed completely opposite selectivity. The transition states leading to the major isomers are discussed.
引用
收藏
页码:1533 / 1539
页数:7
相关论文
共 20 条